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What Causes Body Shaking When Starting an Automatic Transmission Car?

1 Answers

McGrace

07/30/25 9:10am

Automatic transmission car body shaking during ignition and startup can be attributed to the following reasons: 1. Misalignment of front wheel positioning angles, excessive toe-in; 2. Low front tire pressure or imbalance caused by repairs or other factors; 3. Deformation of front wheel spokes or unequal number of tire bolts; 4. Loose installation of transmission system components; 5. Bent drive shaft, dynamic imbalance, or deformation of the front axle; 6. Failed shock absorbers, inconsistent stiffness of front leaf springs, or frame deformation. An automatic transmission eliminates the need for manual gear shifting while driving. It also includes continuously variable transmission (CVT), electronic paddle shifters, and electronic gear lever shifting. Generally, an automatic transmission has six gears: P (Park), R (Reverse), N (Neutral), D (Drive), S (Sport or Hill Climb), and L (Low).

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